I recently replaced the tank on a 1993-ish Crane toilet. (My tank was cracked at the handle opening, and a neighbor was replacing his old toilets, same model, so I salvaged his old tank.) The new-to-me tank has a full Korky rebuild kit (from Lowes) in it. Not sure why he replaced the original flush valve, mine still have the original flush and fill valves, still working great. But, whatever.
I installed the tank with a new tank-to-bowl seal and bolts, filled it, and left the water off to check for leaks. Sure enough, there is a very slow leak (it drains out over a few days). No water on the floor. I replaced the Korky flapper which was showing signs of wear, with a new Fluidmaster flapper, and this leaked faster. I then installed a Korky flush valve repair kit which is a flapper and a glue-on flush valve seat. I think it's back to leaking very slowly.
Before I give up and replace the entire flush valve, is there anything else I might check? If the gasket between the flush valve body and the inside of the tank was leaking, it would probably leak onto the floor, or into the bowl and onto the floor. Wouldn't it? Hard to guess at where such a leak would run to. Again, there is absolutely nothing on the floor. Perhaps there is a pinhole leak in the overflow tube. I don't recall how far down the tank drained after fully leaking out. Down near the level of the flapper, but I didn't note exactly where.
Fill tube is above the overflow tube, it's not siphoning.
All ideas appreciated.
I installed the tank with a new tank-to-bowl seal and bolts, filled it, and left the water off to check for leaks. Sure enough, there is a very slow leak (it drains out over a few days). No water on the floor. I replaced the Korky flapper which was showing signs of wear, with a new Fluidmaster flapper, and this leaked faster. I then installed a Korky flush valve repair kit which is a flapper and a glue-on flush valve seat. I think it's back to leaking very slowly.
Before I give up and replace the entire flush valve, is there anything else I might check? If the gasket between the flush valve body and the inside of the tank was leaking, it would probably leak onto the floor, or into the bowl and onto the floor. Wouldn't it? Hard to guess at where such a leak would run to. Again, there is absolutely nothing on the floor. Perhaps there is a pinhole leak in the overflow tube. I don't recall how far down the tank drained after fully leaking out. Down near the level of the flapper, but I didn't note exactly where.
Fill tube is above the overflow tube, it's not siphoning.
All ideas appreciated.
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